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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 469 · 40 questions
TalentJR

Remember (ON + OFF = one blink): 1 second = 1000 ms. One blink = ON wait + OFF wait. Blinks = total time in ms ÷ one blink; repeat n times takes n × one round.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ A program says “wait 2000 ms”. How many seconds is that? =
  2. 2.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  3. 3.⏱️ How many milliseconds is a wait of 0.6 seconds?
  4. 4.⏱️ repeat 7 times { buzzer ON; wait 800 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  5. 5.⏱️ How many milliseconds is a wait of 1.5 seconds?
  6. 6.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 400 ms }
    How many times does the LED blink in 6 seconds?
  7. 7.⏱️ repeat 2 times { buzzer ON; wait 700 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  8. 8.⏱️ How many milliseconds is a wait of 1.1 seconds?
  9. 9.⏱️ A program says “wait 10000 ms”. How many seconds is that? =
  10. 10.⏱️ How many milliseconds is a wait of 2.4 seconds?
  11. 11.⏱️ What does “wait 500 ms” do? (a) waits 500 seconds (b) blinks 500 times (c) turns the LED off (d) pauses for half a second
  12. 12.⏱️ loop forever { LED ON; wait 300 ms; LED OFF; wait 500 ms }
    How many milliseconds does one blink (ON + OFF) take?
  13. 13.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 1750 ms }
    How many times does the LED blink in 8 seconds?
  14. 14.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 700 ms }
    How many milliseconds does one blink (ON + OFF) take?
  15. 15.⏱️ A program says “wait 9000 ms”. How many seconds is that? =
  16. 16.⏱️ A program says “wait 1250 ms”. How many seconds is that? =
  17. 17.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 4 seconds?
  18. 18.⏱️ How many milliseconds is a wait of 4.1 seconds?
  19. 19.⏱️ How many milliseconds is a wait of 2 seconds?
  20. 20.⏱️ repeat 7 times { buzzer ON; wait 900 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  21. 21.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 350 ms }
    How many milliseconds does one blink (ON + OFF) take?
  22. 22.⏱️ A program says “wait 7250 ms”. How many seconds is that? =
  23. 23.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  24. 24.⏱️ repeat 3 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 1000 ms }
    How many milliseconds does this take in all?
  25. 25.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 400 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ How many milliseconds are in 1 second? (a) 60 (b) 1000 (c) 10 (d) 100
  27. 27.⏱️ repeat 7 times { buzzer ON; wait 300 ms; buzzer OFF; wait 700 ms }
    How many milliseconds does this take in all?
  28. 28.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 50 ms }
    How many times does the LED blink in 9 seconds?
  29. 29.⏱️ A program says “wait 9500 ms”. How many seconds is that? =
  30. 30.⏱️ How many milliseconds is a wait of 2.8 seconds?
  31. 31.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 900 ms }
    How many milliseconds does one blink (ON + OFF) take?
  32. 32.⏱️ repeat 7 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  33. 33.⏱️ loop forever { LED ON; wait 900 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 8 seconds?
  34. 34.⏱️ How many milliseconds is a wait of 0.7 seconds?
  35. 35.⏱️ repeat 10 times { buzzer ON; wait 200 ms; buzzer OFF; wait 900 ms }
    How many milliseconds does this take in all?
  36. 36.⏱️ A program says “wait 8000 ms”. How many seconds is that? =
  37. 37.⏱️ A program says “wait 5750 ms”. How many seconds is that? =
  38. 38.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  39. 39.⏱️ loop forever { LED ON; wait 50 ms; LED OFF; wait 100 ms }
    How many milliseconds does one blink (ON + OFF) take?
  40. 40.⏱️ loop forever { LED ON; wait 650 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?

Answer key

  1. 2
  2. 1450
  3. 600
  4. 6300
  5. 1500
  6. 12
  7. 3000
  8. 1100
  9. 10
  10. 2400
  11. pauses for half a second
  12. 800
  13. 4
  14. 850
  15. 9
  16. 1.25
  17. 10
  18. 4100
  19. 2000
  20. 8400
  21. 600
  22. 7.25
  23. 50
  24. 6000
  25. 1050
  26. 1000
  27. 7000
  28. 45
  29. 9.5
  30. 2800
  31. 1550
  32. 7700
  33. 8
  34. 700
  35. 11000
  36. 8
  37. 5.75
  38. 1
  39. 150
  40. 1200

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